git.sesse.net Git - casparcg/blob - modules/image/producer/image_scroll_producer.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "image_scroll_producer.h"\r
  23 \r
  24 #include "../util/image_loader.h"\r
  25 \r
  26 #include <core/video_format.h>\r
  27 \r
  28 #include <core/frame/draw_frame.h>\r
  29 #include <core/frame/frame_factory.h>\r
  30 #include <core/frame/frame_transform.h>\r
  31 #include <core/frame/pixel_format.h>\r
  32 #include <core/frame/write_frame.h>\r
  33 \r
  34 #include <common/env.h>\r
  35 #include <common/log.h>\r
  36 #include <common/except.h>\r
  37 \r
  38 #include <boost/assign.hpp>\r
  39 #include <boost/filesystem.hpp>\r
  40 #include <boost/foreach.hpp>\r
  41 #include <boost/lexical_cast.hpp>\r
  42 #include <boost/property_tree/ptree.hpp>\r
  43 \r
  44 #include <algorithm>\r
  45 #include <array>\r
  46 \r
  47 using namespace boost::assign;\r
  48 \r
  49 namespace caspar { namespace image {\r
  50                 \r
  51 struct image_scroll_producer : public core::frame_producer\r
  52 {       \r
  53         const std::wstring                                                              filename_;\r
  54         std::vector<spl::shared_ptr<core::draw_frame>>  frames_;\r
  55         core::video_format_desc                                                 format_desc_;\r
  56         int                                                                                             width_;\r
  57         int                                                                                             height_;\r
  58 \r
  59         int                                                                                             delta_;\r
  60         int                                                                                             speed_;\r
  61 \r
  62         std::array<double, 2>                                                   start_offset_;\r
  63 \r
  64         explicit image_scroll_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, int speed) \r
  65                 : filename_(filename)\r
  66                 , delta_(0)\r
  67                 , format_desc_(frame_factory->video_format_desc())\r
  68                 , speed_(speed)\r
  69         {\r
  70                 start_offset_.assign(0.0);\r
  71 \r
  72                 auto bitmap = load_image(filename_);\r
  73                 FreeImage_FlipVertical(bitmap.get());\r
  74 \r
  75                 width_  = FreeImage_GetWidth(bitmap.get());\r
  76                 height_ = FreeImage_GetHeight(bitmap.get());\r
  77 \r
  78                 auto bytes = FreeImage_GetBits(bitmap.get());\r
  79                 int count = width_*height_*4;\r
  80 \r
  81                 if(height_ > format_desc_.height)\r
  82                 {\r
  83                         while(count > 0)\r
  84                         {\r
  85                                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
  86                                 desc.planes.push_back(core::pixel_format_desc::plane(width_, format_desc_.height, 4));\r
  87                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), desc);\r
  88 \r
  89                                 if(count >= frame->image_data(0).size())\r
  90                                 {       \r
  91                                         std::copy_n(bytes + count - frame->image_data(0).size(), frame->image_data(0).size(), frame->image_data(0).begin());\r
  92                                         count -= static_cast<int>(frame->image_data(0).size());\r
  93                                 }\r
  94                                 else\r
  95                                 {\r
  96                                         memset(frame->image_data(0).begin(), 0, frame->image_data(0).size());   \r
  97                                         std::copy_n(bytes, count, frame->image_data(0).begin() + format_desc_.size - count);\r
  98                                         count = 0;\r
  99                                 }\r
 100                         \r
 101                                 frames_.push_back(frame);\r
 102                         }\r
 103                         \r
 104                         if(speed_ < 0.0)\r
 105                         {\r
 106                                 auto offset = format_desc_.height - (height_ % format_desc_.height);\r
 107                                 auto offset2 = offset * 0.5/static_cast<double>(format_desc_.height);\r
 108                                 start_offset_[1] = (std::ceil(static_cast<double>(height_) / static_cast<double>(format_desc_.height)) + 1.0) * 0.5 - offset2;// - 1.5;\r
 109                         }\r
 110                 }\r
 111                 else\r
 112                 {\r
 113                         int i = 0;\r
 114                         while(count > 0)\r
 115                         {\r
 116                                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
 117                                 desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width, height_, 4));\r
 118                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), desc);\r
 119                                 if(count >= frame->image_data(0).size())\r
 120                                 {       \r
 121                                         for(int y = 0; y < height_; ++y)\r
 122                                                 std::copy_n(bytes + i * format_desc_.width*4 + y * width_*4, format_desc_.width*4, frame->image_data(0).begin() + y * format_desc_.width*4);\r
 123                                         \r
 124                                         ++i;\r
 125                                         count -= static_cast<int>(frame->image_data(0).size());\r
 126                                 }\r
 127                                 else\r
 128                                 {\r
 129                                         memset(frame->image_data(0).begin(), 0, frame->image_data(0).size());   \r
 130                                         int width2 = width_ % format_desc_.width;\r
 131                                         for(int y = 0; y < height_; ++y)\r
 132                                                 std::copy_n(bytes + i * format_desc_.width*4 + y * width_*4, width2*4, frame->image_data(0).begin() + y * format_desc_.width*4);\r
 133 \r
 134                                         count = 0;\r
 135                                 }\r
 136                         \r
 137                                 frames_.push_back(frame);\r
 138                         }\r
 139 \r
 140                         std::reverse(frames_.begin(), frames_.end());\r
 141 \r
 142                         if(speed_ > 0.0)\r
 143                         {\r
 144                                 auto offset = format_desc_.width - (width_ % format_desc_.width);\r
 145                                 start_offset_[0] = offset * 0.5/static_cast<double>(format_desc_.width);\r
 146                         }\r
 147                         else\r
 148                         {\r
 149                                 start_offset_[0] = (std::ceil(static_cast<double>(width_) / static_cast<double>(format_desc_.width)) + 1.0) * 0.5;// - 1.5;\r
 150                         }\r
 151                 }\r
 152 \r
 153                 CASPAR_LOG(info) << print() << L" Initialized";\r
 154         }\r
 155         \r
 156         // frame_producer\r
 157 \r
 158         virtual spl::shared_ptr<core::draw_frame> receive(int) override\r
 159         {               \r
 160                 delta_ += speed_;\r
 161 \r
 162                 if(frames_.empty())\r
 163                         return core::draw_frame::eof();\r
 164                 \r
 165                 if(height_ > format_desc_.height)\r
 166                 {\r
 167                         if(static_cast<int>(std::abs(delta_)) >= height_ - format_desc_.height)\r
 168                                 return core::draw_frame::eof();\r
 169 \r
 170                         for(int n = 0; n < frames_.size(); ++n)\r
 171                         {\r
 172                                 frames_[n]->get_frame_transform().fill_translation[0] = start_offset_[0];\r
 173                                 frames_[n]->get_frame_transform().fill_translation[1] = start_offset_[1] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.height);\r
 174                         }\r
 175                 }\r
 176                 else\r
 177                 {\r
 178                         if(static_cast<int>(std::abs(delta_)) >= width_ - format_desc_.width)\r
 179                                 return core::draw_frame::eof();\r
 180 \r
 181                         for(int n = 0; n < frames_.size(); ++n)\r
 182                         {\r
 183                                 frames_[n]->get_frame_transform().fill_translation[0] = start_offset_[0] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.width);                                \r
 184                                 frames_[n]->get_frame_transform().fill_translation[1] = start_offset_[1];\r
 185                         }\r
 186                 }\r
 187 \r
 188                 return spl::make_shared<core::draw_frame>(frames_);\r
 189         }\r
 190                         \r
 191         virtual std::wstring print() const override\r
 192         {\r
 193                 return L"image_scroll_producer[" + filename_ + L"]";\r
 194         }\r
 195 \r
 196         virtual std::wstring name() const override\r
 197         {\r
 198                 return L"image-scroll";\r
 199         }\r
 200 \r
 201         virtual boost::property_tree::wptree info() const override\r
 202         {\r
 203                 boost::property_tree::wptree info;\r
 204                 info.add(L"type", L"image-scroll");\r
 205                 info.add(L"filename", filename_);\r
 206                 return info;\r
 207         }\r
 208 \r
 209         virtual uint32_t nb_frames() const override\r
 210         {\r
 211                 if(height_ > format_desc_.height)\r
 212                 {\r
 213                         auto length = (height_ - format_desc_.height);\r
 214                         return length/std::abs(speed_);// + length % std::abs(delta_));\r
 215                 }\r
 216                 else\r
 217                 {\r
 218                         auto length = (width_ - format_desc_.width);\r
 219                         auto result = length/std::abs(speed_);// + length % std::abs(delta_));\r
 220                         return result;\r
 221                 }\r
 222         }\r
 223 };\r
 224 \r
 225 spl::shared_ptr<core::frame_producer> create_scroll_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 226 {\r
 227         static const std::vector<std::wstring> extensions = list_of(L"png")(L"tga")(L"bmp")(L"jpg")(L"jpeg")(L"gif")(L"tiff")(L"tif")(L"jp2")(L"jpx")(L"j2k")(L"j2c");\r
 228         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 229         \r
 230         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 231                 {                                       \r
 232                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 233                 });\r
 234 \r
 235         if(ext == extensions.end())\r
 236                 return core::frame_producer::empty();\r
 237         \r
 238         int speed = 0;\r
 239         auto speed_it = std::find(params.begin(), params.end(), L"SPEED");\r
 240         if(speed_it != params.end())\r
 241         {\r
 242                 if(++speed_it != params.end())\r
 243                         speed = boost::lexical_cast<int>(*speed_it);\r
 244         }\r
 245 \r
 246         if(speed == 0)\r
 247                 return core::frame_producer::empty();\r
 248 \r
 249         return core::wrap_producer(spl::make_shared<image_scroll_producer>(frame_factory, filename + L"." + *ext, speed));\r
 250 }\r
 251 \r
 252 }}